/*===========================================================================*\
*                                                                           *
*                               OpenMesh                                    *
*      Copyright (C) 2001-2005 by Computer Graphics Group, RWTH Aachen      *
*                           www.openmesh.org                                *
*                                                                           *
*---------------------------------------------------------------------------* 
*                                                                           *
*                                License                                    *
*                                                                           *
*  This library is free software; you can redistribute it and/or modify it  *
*  under the terms of the GNU Library General Public License as published   *
*  by the Free Software Foundation, version 2.                              *
*                                                                           *
*  This library is distributed in the hope that it will be useful, but      *
*  WITHOUT ANY WARRANTY; without even the implied warranty of               *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
*  Library General Public License for more details.                         *
*                                                                           *
*  You should have received a copy of the GNU Library General Public        *
*  License along with this library; if not, write to the Free Software      *
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
*                                                                           *
\*===========================================================================*/


//=============================================================================
//
//  Implements a writer module for OM files
//
//=============================================================================


#ifndef __OMWRITER_HH__
#define __OMWRITER_HH__


//=== INCLUDES ================================================================


// STD C++
#include <iostream>
#include <string>

// OpenMesh
#include <Core/IO/BinaryHelper.hh>
#include <Core/System/config.hh>
#include <Core/Utils/SingletonT.hh>
#include <Core/IO/OMFormat.hh>
#include <Core/IO/IOManager.hh>
#include <Core/IO/writer/BaseWriter.hh>


//== NAMESPACES ===============================================================


namespace OpenMesh {
	namespace IO {

		//=== FORWARDS ================================================================


		class BaseExporter;


		//=== IMPLEMENTATION ==========================================================


		/** 
		*  Implementation of the OM format writer. This class is singleton'ed by 
		*  SingletonT to OMWriter.
		*/
		class _OMWriter_ : public BaseWriter
		{
		public:

			// constructor
			_OMWriter_();

			std::string get_description() const
			{ return "OpenMesh Format"; }

			std::string get_extensions() const
			{ return "om"; }

			bool write(std::ostream&, BaseExporter&, Options) const;


			size_t binary_size(Options _opt) const;


		protected:

			static const OMFormat::uchar magic_[3];
			static const OMFormat::uint8 version_;

			bool write(const std::string&, BaseExporter&, Options) const;

			bool write_binary(std::ostream&, BaseExporter&, Options) const;

			size_t store_binary_custom_chunk( std::ostream&, const BaseProperty&,
				OMFormat::Chunk::Entity, bool) const;
		};


		//== TYPE DEFINITION ==========================================================


		/// Declare the single entity of the OM writer.
		extern _OMWriter_  __OMWriterInstance;
		_OMWriter_& OMWriter();


		//=============================================================================
	} // namespace IO
} // namespace OpenMesh
//=============================================================================
#endif
//=============================================================================
